fd6d88f55b
SANDBOX_PHY_REG_CNT is not an allowable index for the array
u16 reg[SANDBOX_PHY_REG_CNT].
Identified by cppcheck.
Fixes: b47edf8069 ("test: dm_mdio: add a 2nd register to the emulated PHY")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
95 lines
1.8 KiB
C
95 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2019
|
|
* Alex Marginean, NXP
|
|
*/
|
|
|
|
#include <dm.h>
|
|
#include <errno.h>
|
|
#include <miiphy.h>
|
|
|
|
#define SANDBOX_PHY_ADDR 5
|
|
#define SANDBOX_PHY_REG_CNT 2
|
|
|
|
struct mdio_sandbox_priv {
|
|
int enabled;
|
|
u16 reg[SANDBOX_PHY_REG_CNT];
|
|
};
|
|
|
|
static int mdio_sandbox_read(struct udevice *dev, int addr, int devad, int reg)
|
|
{
|
|
struct mdio_sandbox_priv *priv = dev_get_priv(dev);
|
|
|
|
if (!priv->enabled)
|
|
return -ENODEV;
|
|
|
|
if (addr != SANDBOX_PHY_ADDR)
|
|
return -ENODEV;
|
|
if (devad != MDIO_DEVAD_NONE)
|
|
return -ENODEV;
|
|
if (reg < 0 || reg >= SANDBOX_PHY_REG_CNT)
|
|
return -ENODEV;
|
|
|
|
return priv->reg[reg];
|
|
}
|
|
|
|
static int mdio_sandbox_write(struct udevice *dev, int addr, int devad, int reg,
|
|
u16 val)
|
|
{
|
|
struct mdio_sandbox_priv *priv = dev_get_priv(dev);
|
|
|
|
if (!priv->enabled)
|
|
return -ENODEV;
|
|
|
|
if (addr != SANDBOX_PHY_ADDR)
|
|
return -ENODEV;
|
|
if (devad != MDIO_DEVAD_NONE)
|
|
return -ENODEV;
|
|
if (reg < 0 || reg >= SANDBOX_PHY_REG_CNT)
|
|
return -ENODEV;
|
|
|
|
priv->reg[reg] = val;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mdio_sandbox_reset(struct udevice *dev)
|
|
{
|
|
struct mdio_sandbox_priv *priv = dev_get_priv(dev);
|
|
int i;
|
|
|
|
for (i = 0; i < SANDBOX_PHY_REG_CNT; i++)
|
|
priv->reg[i] = 0;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct mdio_ops mdio_sandbox_ops = {
|
|
.read = mdio_sandbox_read,
|
|
.write = mdio_sandbox_write,
|
|
.reset = mdio_sandbox_reset,
|
|
};
|
|
|
|
static int mdio_sandbox_probe(struct udevice *dev)
|
|
{
|
|
struct mdio_sandbox_priv *priv = dev_get_priv(dev);
|
|
|
|
priv->enabled = 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct udevice_id mdio_sandbox_ids[] = {
|
|
{ .compatible = "sandbox,mdio" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(mdio_sandbox) = {
|
|
.name = "mdio_sandbox",
|
|
.id = UCLASS_MDIO,
|
|
.of_match = mdio_sandbox_ids,
|
|
.probe = mdio_sandbox_probe,
|
|
.ops = &mdio_sandbox_ops,
|
|
.priv_auto_alloc_size = sizeof(struct mdio_sandbox_priv),
|
|
};
|